Answer : 1. "Karnataka"
Explanation :

UNESCO World Heritage tagged “Hoysala Temples” are located in the state of Karnataka. These temples are collectively called the “Sacred Group of Hoysalas”. UNESCO has officially included the “Sacred Group of Hoysalas” in its prestigious World Heritage List. These ancient temples, which were previously on the UNESCO tentative list since 2014, are now gaining global recognition for their extraordinary cultural and historical importance. Hoysala sacred groups include the famous temples of Belur, such as the Chennakesava Temple and Halebid, which feature star-shaped architectural plans.